FAN2502S26X

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The FAN2502S26X is a fixed-output low-dropout linear regulator from the FAN2502/03 family, manufactured by onsemi. It provides a regulated output voltage of 2.6V with a maximum continuous output current of 150mA. The device operates within an input voltage range of 2.7V to 6.5V and utilizes CMOS technology for micropower performance. Key electrical characteristics include a ground pin current of 25µA at full load, a dropout voltage of 150mV at 150mA, and thermal shutdown protection triggered at 150°C. It is housed in a compact SOT-23-5 surface-mount package.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Utilizes CMOS process technology to achieve ultra-low power consumption and micropower operation suitable for battery-powered devices.
• Features extremely low dropout voltage characteristics under load compared to older bipolar pass-transistor designs.
• Includes onboard thermal limiting circuitry that disables the output when die temperature exceeds specified maximums.
• Offers flexible loop stability capable of accommodating a wide variety of external capacitors with varying ESR values.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Cellular phones and accessories
• Portable cameras and video recorders
• Laptop, notebook and palmtop computers

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the specific ordering suffix '26X' confirms the 2.6V fixed output voltage and Bypass pin configuration. Confirm the manufacturer designation as Fairchild Semiconductor or onsemi, noting historical corporate transitions. Ensure the component is sourced from authorized distributors to guarantee authenticity and compliance with RoHS standards. Check datasheet revisions for any updates regarding mechanical dimensions or electrical tolerances prior to final procurement.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component for applications requiring a stable 2.6V supply with minimal quiescent current draw. The device is optimized for portable electronics where space constraints favor the SOT-23-5 package. Designers should consider the thermal resistance characteristics of the PCB layout to manage heat dissipation effectively. Verify that the required output capacitor type meets the stability requirements across the expected operating temperature range.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This part belongs to the FAN2502/03 family of 150mA CMOS LDO regulators. The FAN2502 series distinguishes itself through Pin 4 functionality, which serves as an Adjust input for variable versions or a Bypass pin for noise reduction in fixed versions. This specific model represents the fixed 2.6V variant utilizing the Bypass function for optimal noise performance in sensitive analog circuits.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

The FAN2502/03 family is designed to be pin-compatible with many popular legacy devices. When selecting substitutes, verify that the replacement maintains the 150mA output current capability and similar dropout voltage specifications. Ensure the alternative device supports the same SOT-23-5 footprint and offers comparable thermal protection features.